Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
The shift to December brings a decrease in the average high-temperature, falling from a cool 50.7°F (10.4°C) in November to an icy 41.5°F (5.3°C). Sanatoga's nights in December cool down to an average low-temperature of 30.2°F (-1°C).Humidity
In December, the average relative humidity is 79%.Rainfall
In Sanatoga, during December, the rain falls for 9.5 days and regularly aggregates up to 2.32" (59mm) of precipitation. In Sanatoga, during the entire year, the rain falls for 146.5 days and collects up to 27.87" (708mm) of precipitation.Snowfall
January through April, November and December are months with snowfall in Sanatoga. In Sanatoga, during December, snow falls for 2.7 days and regularly aggregates up to 1.89" (48mm) of snow. Throughout the year, there are 19.1 snowfall days, and 11.54" (293mm) of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 9h and 24min of daylight.On the first day of December, sunrise is at 7:06 am and sunset at 4:37 pm. On the last day of the month, sunrise is at 7:24 am and sunset at 4:46 pm EST.
Sunshine
In December, the average sunshine is 4.9h.UV index
January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV rays for the ordinary person.Note: The daily high UV index of 2 during December translates into the following recommendations:
Protection from prolonged sun exposure is necessary for babies, children, and individuals with sensitive skin. To guard against the harmful effects of the Sun, minimize exposure during midday. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. Take precaution! The reflection from snow can almost double the UV radiation of the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is December cold?
What is the average humidity in December?
How much does it rain in December?
How many days does it snow in December?
What is the month with the shortest days?
What is the average length of the day in December?
When are sunrise and sunset in December?
How many hours of sunshine does Sanatoga have in December?
What is the month with the lowest UV index?
What is the UV index intensity in December?
Average temperature in December
Sanatoga, PA
- Average high temperature in December: 41.5°F
The warmest month (with the highest average high temperature) is July (84.2°F).
The month with the lowest average high temperature is January (35.4°F).
- Average low temperature in December: 30.2°F
The month with the highest average low temperature is July (65.5°F).
The coldest month (with the lowest average low temperature) is January (23.2°F).
Average pressure in December
Sanatoga, PA
- Average pressure in December: 30.1"Hg
The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in December
Sanatoga, PA
- Average wind speed in December: 7.6mph
The windiest month (with the highest average wind speed) is March (8.1mph).
The calmest month (with the lowest average wind speed) is August (5mph).
Average humidity in December
Sanatoga, PA
- Average humidity in December: 79%
The months with the highest relative humidity are February and October (80%).
The months with the lowest relative humidity are April and July (75%).
Average rainfall in December
Sanatoga, PA
- Average rainfall in December: 2.32"
The wettest month (with the highest rainfall) is August (3.15").
The driest month (with the least rainfall) is September (1.81").
Average rainfall days in December
Sanatoga, PA
- Average rainfall days in December: 9.5 days
The months with the highest number of rainy days are May and July (17 days).
The month with the least rainy days is January (7.3 days).
Average snowfall in December
Sanatoga, PA
- Average snowfall in December: 1.89"
The month with the highest snowfall is March (3.7").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Sanatoga, PA
- Average snowfall days in December: 2.7 days
The month with the highest number of snowfall days is January (5.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Sanatoga, PA
- Average daylight in December: 9h and 2min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in December: 4h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days in December
Sanatoga, PA
- Average sunshine days in December: 19.4 days
The month with the most sunshine days is November (21 days).
The month with the least sunshine days is May (12.3 days).
Average UV index in December
Sanatoga, PA
- Average UV index in December: 2
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in December
Sanatoga, PA
- Average cloud cover in December: 48
The month with the most cloud cover is February (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 32).
Average visibility in December
Sanatoga, PA
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, June, July, August, October, November and December (6mi).
The months with the lowest visibility are May and September (5mi).
Sanatoga, Pennsylvania, USA
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